12021462155612 has 192 divisors, whose sum is σ = 26489435900928. Its totient is φ = 4647186432000.

The previous prime is 12021462155597. The next prime is 12021462155617. The reversal of 12021462155612 is 21655126412021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021462155617) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3003111203 + ... + 3003115205.

It is an arithmetic number, because the mean of its divisors is an integer number (137965811984).

Almost surely, 2^{12021462155612} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021462155612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13244717950464).

12021462155612 is an abundant number, since it is smaller than the sum of its proper divisors (14467973745316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021462155612 is a wasteful number, since it uses less digits than its factorization.

12021462155612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940 (or 4938 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

Adding to 12021462155612 its reverse (21655126412021), we get a palindrome (33676588567633).

The spelling of 12021462155612 in words is "twelve trillion, twenty-one billion, four hundred sixty-two million, one hundred fifty-five thousand, six hundred twelve".